Occupancy models are used to help estimate true occupancy of a species […]. They can assist with accounting for imperfect detection of organisms in a study, and help us determine the true occupancy and the detection probabilities of the species at the site.
Because detecting wildlife species is not done with 100% accuracy, we can use occupancy models to help us determine the proportion of times that we don’t detect the species and either the species is truly not there or the species is there, and we just did not detect it.
A true occupancy model depends on multiple visits to the same site to be able to estimate the detection part of the model. There are, however, some works using single visit occupancy models.